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Priority claimed from GB7721/60Aexternal-prioritypatent/GB956356A/en
Application filed by Bell Telephone MfgfiledCriticalBell Telephone Mfg
Publication of BE600920ApublicationCriticalpatent/BE600920A/fr
Dispositif pour nettoyer les orifices de décharge des régulateurs de pression, en particulier des régulateurs d'installations pneumatiques à plusieurs sections